arroiovsátrioTell them apart

Which to use

“arroio” and “átrio” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#31,648
“arroio” frequency rank
#26,601
“átrio” frequency rank
58249
confusion score

Side-by-Side Comparison

Feature arroio átrio
Definition ribeiro vestíbulo que vai da entrada principal à escadaria

Where the eye mixes arroio and átrio

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. arroio runs 6 letters (VCCVVV) against átrio's 5 (VCCVV) - the length gap alone is often enough to separate them once you know to check it.

6 ch
arroio
5 ch
átrio

Why the eye confuses arroio with átrio

A purely visual mix-up. arroio (/a.ˈχoj.u/) and átrio (/ˈa.tɾju/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 58249, derived from the frequency rank of both members and their visual similarity.

arroio is recorded at frequency rank #31,648, classified as anoun, pronounced /a.ˈχoj.u/. átrio is at rank #26,601, tagged as anoun, pronounced /ˈa.tɾju/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 58249, this pair ranks #8,851 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of arroio vs átrio

Shared letters: ior. Private to "arroio": a. Private to "átrio": tá.

"arroio" · 6 letters · shape VCCVVV  ·  "átrio" · 5 letters · shape VCCVV

Known mistypes of this pair

  • arroio ← aroio · arorio · arrioo · arrooi · raroio

Frequently Asked Questions

Do "arroio" and "átrio" mean the same thing in a sentence?
No. They are said differently (/a.ˈχoj.u/ versus /ˈa.tɾju/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Portuguese text, does "arroio" or "átrio" show up more?
"átrio" is the more common of the two: it sits at frequency rank #26,601 in our Portuguese list, against #31,648 for "arroio". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "arroio" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "átrio" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #8,851 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "arroio" and "átrio" also get mixed up with nearby pairs, the highest-scored neighbour is "átrio vs atroz". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #8,851 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list